code: def _get_all_categories(self):
      return (
          self.category_a_list_
          + self.category_b_list_
          + self.not_category_a_list_
          + self.not_category_b_list_
      )
  
file_path: scattertext/scattertext/semioticsquare/FourSquare.py
imports: from scattertext.semioticsquare import SemioticSquare
  from scattertext.termranking import AbsoluteFrequencyRanker
label_desc: Use image node_id 4 for calling the FourSquare obj's underlying member method code with example usage: obj._get_all_categories() and returns: unknown